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CAS Num: 000872-55-9
SMILES : CCc1cccs1
CHEM : 2-Ethylthiophene
MOL FOR: C6 H8 S1
MOL WT : 112.19
------------------------------ EPI SUMMARY (v4.00) --------------------------
Physical Property Inputs:
Water Solubility (mg/L): ------
Vapor Pressure (mm Hg) : ------
Henry LC (atm-m3/mole) : ------
Log Kow (octanol-water): ------
Boiling Point (deg C) : ------
Melting Point (deg C) : ------
Log Octanol-Water Partition Coef (SRC):
Log Kow (KOWWIN v1.67 estimate) = 2.85
Log Kow (Exper. database match) = 2.87
Exper. Ref: HANSCH,C ET AL. (1995)
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
Boiling Pt (deg C): 159.10 (Adapted Stein & Brown method)
Melting Pt (deg C): -14.96 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 8.35 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 1.11E+003 (Mean VP of Antoine & Grain methods)
BP (exp database): 134 deg C
VP (exp database): 1.12E+01 mm Hg (1.49E+003 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
Water Solubility at 25 deg C (mg/L): 378.6
log Kow used: 2.87 (expkow database)
no-melting pt equation used
Water Sol (Exper. database match) = 292 mg/L (25 deg C)
Exper. Ref: YALKOWSKY,SH & DANNENFELSER,RM (1992)
Water Sol Estimate from Fragments:
Wat Sol (v1.01 est) = 415.95 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Thiophenes
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
Bond Method : 4.29E-003 atm-m3/mole (4.35E+002 Pa-m3/mole)
Group Method: Incomplete
For Henry LC Comparison Purposes:
User-Entered Henry LC: not entered
Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:
HLC: 3.256E-003 atm-m3/mole (3.299E+002 Pa-m3/mole)
VP: 8.35 mm Hg (source: MPBPVP)
WS: 379 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
Log Kow used: 2.87 (exp database)
Log Kaw used: -0.756 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 3.626
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
Biowin1 (Linear Model) : 0.7488
Biowin2 (Non-Linear Model) : 0.8800
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 2.8764 (weeks )
Biowin4 (Primary Survey Model) : 3.6173 (days-weeks )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.3477
Biowin6 (MITI Non-Linear Model): 0.3875
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.3484
Ready Biodegradability Prediction: NO
Hydrocarbon Biodegradation (BioHCwin v1.01):
LOG BioHC Half-Life (days) : 1.2171
BioHC Half-Life (days) : 16.4843
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 1.49E+003 Pa (11.2 mm Hg)
Log Koa (Koawin est ): 3.626
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 2.01E-009
Octanol/air (Koa) model: 1.04E-009
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 7.26E-008
Mackay model : 1.61E-007
Octanol/air (Koa) model: 8.3E-008
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 24.7819 E-12 cm3/molecule-sec
Half-Life = 0.432 Days (12-hr day; 1.5E6 OH/cm3)
Half-Life = 5.179 Hrs
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
1.17E-007 (Junge-Pankow, Mackay avg)
8.3E-008 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
Koc : 244.8 L/kg (MCI method)
Log Koc: 2.389 (MCI method)
Koc : 309.4 L/kg (Kow method)
Log Koc: 2.490 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Rate constants can NOT be estimated for this structure!
Bioaccumulation Estimates (BCFBAF v3.00):
Log BCF from regression-based method = 1.561 (BCF = 36.36 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -0.4140 days (HL = 0.3855 days)
Log BCF Arnot-Gobas method (upper trophic) = 1.717 (BCF = 52.11)
Log BAF Arnot-Gobas method (upper trophic) = 1.717 (BAF = 52.11)
log Kow used: 2.87 (expkow database)
Volatilization from Water:
Henry LC: 0.00429 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 1.225 hours
Half-Life from Model Lake : 102.2 hours (4.258 days)
Removal In Wastewater Treatment:
Total removal: 63.90 percent
Total biodegradation: 0.06 percent
Total sludge adsorption: 2.95 percent
Total to Air: 60.90 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 5.89 10.4 1000
Water 39.6 360 1000
Soil 54.1 720 1000
Sediment 0.44 3.24e+003 0
Persistence Time: 161 hr